How severe is CVE-2025-67873?

CVE-2025-67873 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-67873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67873?

CVE-2025-67873 primarily affects Capstone-engine Capstone. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-67873?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-67873 have an EU (EUVD) identifier?

Yes. CVE-2025-67873 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203996.

When was CVE-2025-67873 published?

CVE-2025-67873 was published on 2025-12-17 and last updated on 2026-06-17.

CVE-2025-67873

CVE-2025-67873 is a medium-severity vulnerability in Capstone-engine Capstone with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203996
Weakness: CWE-122
Affected product: Capstone-engine Capstone
Published: 2025-12-17
Last modified: 2026-06-17

Description

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.

Frequently asked questions

What is CVE-2025-67873?: Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.
How severe is CVE-2025-67873?: CVE-2025-67873 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-67873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67873?: CVE-2025-67873 primarily affects Capstone-engine Capstone. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-67873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-67873 have an EU (EUVD) identifier?: Yes. CVE-2025-67873 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203996.
When was CVE-2025-67873 published?: CVE-2025-67873 was published on 2025-12-17 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:*
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:capstone-engine:capstone:6.0.0:alpha5:*:*:*:*:*:*

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